Method for reinforcing condensation and a device thereof

ABSTRACT

A device for reinforcing condensation, especially a device being disposed between a compressor and an expansion valve in a condensation system, comprises a front pipe, at least two divided flow pipes, a plurality of capillary tubes, at least a combining pipe, and a rear pipe. The front pipe is connected to a heat exchange pipe in the condensation system. The divided flow pipes are joined to the front pipe and each divided flow pipe has a diameter thereof smaller than that of the front pipe. The capillary tubes are divided into a plurality of groups and each group has two or more of the capillary tubes. The capillary tubes at an end thereof connect with the divided flow pipes and the diameter of the respective capillary tube is smaller than that the diameter of the respective divided flow pipe. The combining pipe at an end thereof connects with the other end of each capillary tube. The rear pipe has an end thereof connects with the other end of the combining pipe and the other end of the rear pipe connects with the expansion valve.

BACKGROUND OF THE INVENTION

[0001] 1. Field of the Invention

[0002] The present invention relates to a method for reinforcing condensation and a device thereof in a refrigeration system, and particularly to a method and a device thereof, which can liquefy the gas part, in the refrigerant before entering the expansion to enhance the cooing effect without increasing the consumption of electricity power and the load of compressor.

[0003] 2. Description of Related Art

[0004] The principle of running a refrigeration system resides in the heat exchange, that is, a cold room effect can be performed by way of the refrigerant sucking heat and discharging heat. From the flow route of the refrigerant, the refrigerant can be sucked back to the compressor for being compressed and output after performing cold room effect. Then, the heat in the refrigerant is discharged by way of a heat exchanger to lower down the temperature of the refrigerant and the refrigerant is changed from the gas phase to the liquid phase through the cold room. The refrigerant mostly is in a state of mist while the cycle is in the stage of evaporation, and is in a state of gas while the cycle is in the stage of suction.

[0005] The air conditioner is a typical example of this type of refrigeration system. When the refrigerant is vaporized, it can be reach a cold room effect with an aid of fanning When the vaporized refrigerant is sucked back to the compressor and pumped to the heat exchanging pipes, the refrigerant can lower down the temperature thereof by way of outside air or cooling water. Then, the refrigerant is condensed to liquid and sent to the evaporation pipe inside.

[0006] The conventional refrigeration system as shown in FIG. 1 has the refrigerant be compressed and sent to the heat exchange pipes, and the compressed refrigerant passes through the condenser pipes and is expanded to generate a cold room effect. Theoretically, the refrigerant is in a state of liquid may lead to a better cold room effect afterward. In fact, the liquid refrigerant is not so pure and may mix with some gas refrigerant, and it is not possible for the gas refrigerant to be condensed and change to a state of liquid. Accordingly, the so-called latent heat affects the subsequent cold room effect.

[0007] It is noted that the latent heat in the gas refrigerant mentioned above is not possible to be eliminated by way of the conventional refrigeration system, and it becomes a blind point unable to be overcome till now. The unsolved problem resides in that the liquid-gas mixture of the refrigerant passes through the heat exchange pipe with extremely fast velocity and there is no enough time for the gas refrigerant mixing in the liquid refrigerant to touch the wall of the heat exchange pipe for heat dissipation such that the gas refrigerant accompanies with the liquid refrigerant to enter the expansion valve. In other words, the uncondensed gas refrigerant with latent heat is unable to be removed at the present time.

[0008] The present inventor has cognized the preceding phenomenon and has a thought that eliminating the gas refrigerant in the refrigeration system or stopping the gas refrigerant outside the expansion valve in the least is a feasible for reinforcing the effect of condensation and breaking through the bottleneck of the conventional art.

SUMMARY OF THE INVENTION

[0009] An object of the present invention is to provide a method and a device for reinforcing condensation, which can eliminate the latent heat in the refrigerant before entering the expansion valve in a refrigeration system to enhance the cold room effect while the refrigeration cycle is running.

BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The present invention can be more fully understood by referencing to the following description and accompanying drawings, in which:

[0011]FIG. 1 is a perspective view of a conventional refrigeration system;

[0012]FIG. 2 is a perspective view of a refrigeration system according to the present invention; and

[0013]FIG. 3 is a cross section of a device of reinforcing condensation in the refrigeration system according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] Referring to FIGS. 2 and 3, a device for reinforcing condensation in a refrigeration system is mounted between a compressor A and an expansion valve B, and preferably between a heat exchange pipe C and the expansion valve B.

[0015] The device for reinforcing condensation 1 comprises a front pipe I, at least two divided flow pipes 2, a plurality of capillary tubes 3, at least two combining pipes 4 and a rear pipe 5.

[0016] Wherein, the front pipe 1 at a head end thereof connects with the heat exchange pipe C of the original condensation system and the tail end thereof, that is, at a joint of the divided flow pipes 2, is added with a filter screen 11 to purify the refrigerant passing through the front pipe 1.

[0017] The divided flow pipes 2 connect and communicate with the tail end of the front pipe 1 respectively, and in order to compatible with flow rate the sum of the cross section of each divided flow pipe 2 is not less than the cross section of the front pipe 1 in the least to avoid accumulation of the refrigerant and a resistance of flow. As illustrated in FIG. 2, four divided flow pipes 2 are provided, but, in practice, it is not limited to use four divided flow pipes and two or more divided flow pipes can be utilized as needed.

[0018] The capillary tubes 3 each provide a diameter smaller than that of each divided flow pipe 2 and communicate with the branch pipes 2. The capillary tubes 3 can be divided into groups and each group is composed of at least two divided flow pipes 2, and the gross cross sections of all the groups of capillary tubes 3 are not less than the cross sections of all the divided flow pipes 2. The capillary tubes 3 are used for liquefying the gas refrigerant while the gas refrigeration passes through the capillary tubes 3. Because the diameter of each capillary tube 3 is small so that there is a great chance for the gas refrigerant to contact with the wall of the capillary tubes. In this way, the latent heat in the gas refrigerant is possible to be dissipated so that the gas refrigerant can be condensed without any difficulty. Hence, it is preferable that the capillary tubes 3 are made of good thermal conductivity such as copper tube while in use.

[0019] The combining pipes 4 are similar to the divided flow pipe 2 and communicate with tail ends of the capillary tubes 3. The combining pipes 4 are used for gathering the refrigerant from all capillary tubes 3 so that the number of the combining pipes 4 is preferably corresponding to that of the divided flow pipes 2. The tail end of each combining pipe 4 is connected to the rear pipe 5.

[0020] The rear pipe 5 at an end thereof communicates with the combining pipes 4 and the other end thereof connects with the expansion valve B such that the refrigerant can pass through the expansion valve to perform a cold room effect.

[0021] Referring to FIGS. 2 and 3 again, comparing to the conventional refrigeration system, the device for reinforcing condensation applied in the present invention not only intensifies the effect of condensation but also creates an innovative method of condensation for a gas refrigerant. The steps for condensing a gas refrigerant provided by the method of the present invention are different from the conventional art, that is, the refrigerant is processed by way of a dividing step, a capillary step, and a combining step. These steps will be described hereinafter in detail:

[0022] (1) The dividing step is that the refrigerant in the front pipe 1 dividedly passes through at least two divided flow pipes 2 to let the liquid refrigerant flow into the divided flow pipes 2 and occupy the, space in the divided flow pipes 2, and part of the gas refrigerant is stopped outside the divided flow pipes 2 temporarily and wait for an opportunity to enter the divided flow pipes 2.

[0023] (2) The capillary step is that the refrigerant from the divided flow pipes 2 dividedly flows into capillary tubes 3 and the diameter of each capillary tube thereof is smaller than that of each divided flow pipe. Each single divided pipe can share at least two or more capillary tubes 3 such that the refrigerant, which may contain a little gas refrigerant during passing through the capillary tubes, can have a great opportunity to contact with the walls of the capillary tubes such that the gas refrigerant can be condensed completely.

[0024] The combining step is that the refrigerant from the capillary tubes is mingled with each other at the combining tubes 4 respectively, then, the refrigerant in the combining tubes is gathered to enter the rear pipe 5 and reach to the expansion valve 5 afterward for being expanded and offering a cold room effect. The flow route of the refrigerant can be apparent from the cross section shown in FIG. 3.

[0025] It is appreciated from the preceding description that the advantages of the present invention can be summarized hereinafter:

[0026] (1) The refrigerant can be liquefied completely at the time of entering the expansion valve as soon as the refrigeration system is in a state of running. It can be learned from the experiment that gas part of the refrigerant initially may be condensed in the capillary tubes incessantly during the refrigeration cycle. Hence, the gas refrigerant can be liquefied completely after the refrigeration system running a period of time, that is, the latent heat can be eliminated or isolated effectively.

[0027] (2) A cold room effect can be enhanced substantially. Because the refrigerant has been liquefied completely before flowing into the expansion valve, the resulted liquid refrigerant has a lower temperature with a higher purity after heat exchange such that the cold room effect cab be enhanced greatly.

[0028] (3) The consumption of electricity power and compressor load may not be affected when the present invention is in use. Especially, the compressed load of the compressor becomes lighter and the consumption of electricity power is reduced accordingly such that the stability of refrigeration system can be maintained. The stability can be represented by way of the pressure gauge and an experiment shows that the fluctuation of indicator in the pressure gauge is about 1 psig, and this means that the present invention provide an excellent stability, which is seldom reached with the conventional art.

[0029] While the invention has been described with reference to a preferred embodiment thereof, it is to be understood that modifications or variations may be easily made without departing from the spirit of this invention, which is defined in the appended claims. 

What is claimed is:
 1. A device for reinforcing condensation, especially a device being disposed between a compressor and an expansion valve in a condensation system, comprising a front pipe with an end, the end being jointed to a heat exchange pipe in the condensation system; at least two divided flow pipes, being joined to the front pipe, and each of the divided flow pipes providing a diameter smaller than that of the front pipe; a plurality of capillary tubes, being divided into a plurality of groups and each group providing two or more of the capillary tubes, an end of the respective capillary tube connecting with the divided flow pipes, and a diameter of the respective capillary tube being smaller that the diameter of the respective branch pipe; at least a combining pipe with two ends, one of the ends connecting with another end of each of the capillary tubes; and a rear pipe with two ends, one of the ends connecting with the other end of the combining pipe, another one of the ends connecting with the expansion valve.
 2. The device for-reinforcing condensation according to claim 1, wherein the front pipe near the divided flow pipes being arranged a filter screen.
 3. The device for reinforcing condensation according to claim 1 is made of conductive metallic material.
 4. The device for reinforcing condensation according to claim 1, wherein the divided flow pipes have the same number as the combining pipe so as to correspond to the capillary tube groups.
 5. A method for reinforcing condensation, comprising following steps: a step of dividing, dividing a refrigerant from a heat exchange pipe in a refrigeration system into at least two pipes of refrigerant flows; a step of capillary, each of the pipes of refrigerant flows being divided further and passing through at least two capillary tube groups; and a step of combining, gathering the refrigerant in each of the capillary tube groups at combining pipes and flowing into an expansion valve.
 6. The method for reinforcing condensation according to claim 5, wherein a step of filtering can be added before the step of dividing.
 7. The method for reinforcing condensation according to claim 5, wherein the step of dividing and the step of combining are performed by way of divided flow pipes and combining pipes and the divided flow pipes having the same number as the combining pipes. 